* {
    margin: 0;
    padding: 0;
}
input {
    outline: none;                             /*清除输入框的外围轮廓*/
}
.top img {
    display: block;
    margin: 0 auto;
    width: 100%;
    height: 318px;
}
.center {
    background: url("../images/login_07.gif") repeat;
}
form {
    width: 331px;
    margin-left: 460px;
    height: 90px;
}
form .left {
    width: 251px;
    float: left;
}
form .left span {
    display: inline-block;
    width: 80px;
}
form .left input[type="search"],
form .left input[type="password"] {
    margin-bottom: 6px;
    padding-left: 6px;
}
form .left .password {
    letter-spacing: 8px;
}
form .left .half {
    width: 106px;
}
form .left img {
    margin-left: 8px;
}
form .right {
    width: 80px;
    float: left;
}
form input[type="submit"],
form input[type="reset"] {
    display: block;
    margin: 14px auto;
}
.footer img {
    display: block;
    width: 100%;
    height: 348px;
}